从航道线向两边扩展，到DDM为0.175的各点轨迹所限制的扇区称为航道扇区。
参考答案：错
Neither side is prepared to talk to _____ unless we can smooth things over between them. [ ]
A. others
B. the other
C. another
D. one other
煤矿老工人复训时间不得少于________小时？
